403055221 has 16 divisors (see below), whose sum is σ = 419215104. Its totient is φ = 387278784.

The previous prime is 403055207. The next prime is 403055249. The reversal of 403055221 is 122550304.

It is a cyclic number.

It is not a de Polignac number, because 403055221 - 2⁹ = 403054709 is a prime.

It is a super-2 number, since 2×403055221² = 324907022350717682, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 403055192 and 403055201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (403055291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1080391 + ... + 1080763.

It is an arithmetic number, because the mean of its divisors is an integer number (26200944).

Almost surely, 2^403055221 is an apocalyptic number.

It is an amenable number.

403055221 is a deficient number, since it is larger than the sum of its proper divisors (16159883).

403055221 is a wasteful number, since it uses less digits than its factorization.

403055221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 780.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 403055221 is about 20076.2352297436. The cubic root of 403055221 is about 738.6774654960.

The spelling of 403055221 in words is "four hundred three million, fifty-five thousand, two hundred twenty-one".